package com.nfu_company.orderup.controller;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.nfu_company.orderup.common.R;
import com.nfu_company.orderup.entity.Employee;
import com.nfu_company.orderup.service.EmployeeService;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.util.DigestUtils;
import org.springframework.web.bind.annotation.*;

import javax.servlet.http.HttpServletRequest;
import java.time.LocalDateTime;


@Slf4j
@RestController


@RequestMapping("/employee")
public class EmployeeController {

    @Autowired
    private EmployeeService employeeService;

    /**
     * 员工登录
     * @param request
     * @param employee
     * @return
     */
    @PostMapping("/login")
    public R<Employee> login(HttpServletRequest request, @RequestBody Employee employee){

        //1.将页面提交的密码进行md5加密处理
        String password = employee.getPassword();
        password = DigestUtils.md5DigestAsHex(password.getBytes());

        //2.根据页面提交的用户名username查询数据库
        LambdaQueryWrapper<Employee> queryWrapper = new LambdaQueryWrapper<>();
        queryWrapper.eq(Employee::getUsername,employee.getUsername());
        Employee emp = employeeService.getOne(queryWrapper);

        //3.如果没有查询到则返回登录失败结果
        if(emp==null){
            return R.error("登录失败");
        }

        //4.密码比对，如果不一致则返回登录失败结果
        if(!emp.getPassword().equals(password)){
            return R.error("登录失败");
        }

        //5.查看员工状态，如果为已禁用状态，则返回员工已禁用结果登录
        if(emp.getStatus()==0){
            return R.error("账号已禁用");
        }

        //6.登录成功，将员工id存入Session并返回登录成功结果
        request.getSession().setAttribute("employee",emp.getId());
        return R.success(emp);
    }

    /**
     * 员工退出
     * @param request
     * @return
     */
    @PostMapping("/logout")
    public R<String> logout(HttpServletRequest request){
        //清理Session中保存的当前登录员工的id
        request.getSession().removeAttribute("employee");
        return R.success("退出成功");
    }

    /**
     * 新增员工
     * @param employee
     * @return
     */
    @PostMapping
    public R<String> save(HttpServletRequest request,@RequestBody Employee employee){
        log.info("新增员工，员工信息:{}",employee.toString());   // 打印日志记录

        //设置初始密码123456，需要进行md5 加密处理
        if (employee.getPassword() != null){    // 判断是否设置了密码
            String passwd = employee.getPassword();
            employee.setPassword(DigestUtils.md5DigestAsHex(passwd.getBytes()));
        }else {
            employee.setPassword(DigestUtils.md5DigestAsHex("123456".getBytes()));
        }

        employee.setCreateTime(LocalDateTime.now());
//        employee.setUpdateTime(LocalDateTime.now());

        //获得当前登录用户的Id
        Long empId = (Long) request.getSession().getAttribute("employee");

        employee.setCreateUser(empId);
//        employee.setUpdateUser(empId);

        employeeService.save(employee);

        return R.success("新增员工成功");
    }

    /**
     * 员工信息的分页查询
     * @param page
     * @param pageSize
     * @return
     */
    @GetMapping("/page")
    public R<Page> page(int page,int pageSize,String name){
        log.info("page={},pageSize={},name={}",page,pageSize,name);

        //构造分页构造器
        Page pageInfo=new Page(page,pageSize);

        //构造条件构造器
        LambdaQueryWrapper<Employee> queryWrapper=new LambdaQueryWrapper();
        //添加过滤条件
        queryWrapper.like(StringUtils.isNotEmpty(name),Employee::getName,name);
        //排序条件：按照员工的更新时间降序排序
        queryWrapper.orderByDesc(Employee::getUpdateTime);

        //执行查询
        employeeService.page(pageInfo,queryWrapper);

        return R.success(pageInfo);
    }

    /**
     * 根据id修改员工信息
     * @param employee
     * @return
     */
    @PutMapping
    public R<String> update(HttpServletRequest request,@RequestBody Employee employee){
        log.info(employee.toString());
        long id=Thread.currentThread().getId();
        log.info("线程id为:{}",id);
        Long empId = (Long) request.getSession().getAttribute("employee");

        if (employee.getPassword() != null){
            String passwd = employee.getPassword();
            employee.setPassword(DigestUtils.md5DigestAsHex(passwd.getBytes()));
        }
        employee.setUpdateTime(LocalDateTime.now());
        employee.setUpdateUser(empId);
        employeeService.updateById(employee);
        return R.success("员工信息修改成功");
    }

    /**
     * 根据id查询员工信息
     * @param id
     * @return
     */
    @GetMapping("/{id}")
    public R<Employee> getById(@PathVariable Long id){
        log.info("根据id查询信息...");
        Employee employee = employeeService.getById(id);
        if(employee!=null){
            return R.success(employee);
        }
        return R.error("没有查询到对应员工信息");
    }

    /**
     * 修改个人信息
     */
    @PostMapping("/updateBySelf")
    public R<String> updateBySelf(HttpServletRequest request,
                                  @RequestBody Employee employee,
                                  @RequestParam(value = "oldPasswd") String oldPasswd){
        System.out.println(oldPasswd);
        log.info(employee.toString());
        log.info(oldPasswd);

        long id=Thread.currentThread().getId();
        log.info("线程id为:{}",id);
        Long empId = (Long) request.getSession().getAttribute("employee");
        String passwd = DigestUtils.md5DigestAsHex(employee.getPassword().getBytes());
        Employee oldEmploy = employeeService.getById(empId);
        if(!DigestUtils.md5DigestAsHex(oldPasswd.getBytes()).equals(oldEmploy.getPassword())){
            return R.error("密码验证失败");
        }
        employee.setPassword(passwd);
        employee.setUpdateTime(LocalDateTime.now());
        employee.setUpdateUser(empId);
        employeeService.updateById(employee);
        return R.success("修改成功");
    }

    /**
     * 删除
     * @return
     */
    @DeleteMapping
    public R<String> delete(@RequestParam("id") Long id){
        //逻辑删除
        employeeService.deleteById(id);
        return R.success("删除成功");
    }

}
